WO2012171259A1 - 盲转实现方法及装置 - Google Patents

盲转实现方法及装置 Download PDF

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Publication number
WO2012171259A1
WO2012171259A1 PCT/CN2011/078499 CN2011078499W WO2012171259A1 WO 2012171259 A1 WO2012171259 A1 WO 2012171259A1 CN 2011078499 W CN2011078499 W CN 2011078499W WO 2012171259 A1 WO2012171259 A1 WO 2012171259A1
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WO
WIPO (PCT)
Prior art keywords
blind
user equipment
invite request
call
indicating
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Application number
PCT/CN2011/078499
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English (en)
French (fr)
Inventor
屈天喜
杨建军
丁志宇
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012171259A1 publication Critical patent/WO2012171259A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/58Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1083In-session procedures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1083In-session procedures
    • H04L65/1094Inter-user-equipment sessions transfer or sharing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer

Definitions

  • the present invention relates to the field of communications, and in particular to a blind transfer implementation method and apparatus.
  • BACKGROUND OF THE INVENTION Blind transfer belongs to a post-call handover service, which means that when any user A talks with service user B, the user
  • FIG. 1 is a flowchart of a blind transfer implementation method according to the related art, requiring call forwarding.
  • the terminal of the operator supports the sending of the Refer message, and can only be implemented in the IMS network. As shown in FIG.
  • Step S102 UE-A and UE-B talk, and maintain the call chain with A road.
  • Step S104 The UE-B refers to the call session control function entity (0) (Call Session Control Function, CSCF for short), wherein the request carries information that is blindly transferred to C.
  • CSCF Call Session Control Function
  • Niu Shaopeng S108 The AS sends a message to CSCF ( 0), which is 202 Accepted.
  • Niu Shaopeng S110 The CSCF forwards the 202 Accepted message to UE-B.
  • Niu Shaopeng S112 The AS sends an INVITE request to the CSCF (T).
  • Niu Shaopeng S114 The application server sends a Notify to the CSCF (0).
  • Niu Shaopeng S116: CSCF (T) sends an INVITE request to UE-C.
  • Niu Shaopeng S118 CSCF (0) sends a Notify message to UE-B.
  • Niu Shaopeng S120 UE-C initiates a 180 ringing message to CSCF (T), which carries C
  • Step S122 The UE-B sends a message to the CSCF (O), which is 200 OK.
  • Step S124: CSCF (0) forwards the 200 OK message to the AS.
  • Step S126: The CSCF (T) sends a 180 ring message to the AS, where the message carries the media information SDP of the user C.
  • Step S128: UE-B sends a Bye message to CSCF (0).
  • Step S132 The AS sends a 200 OK message to the CSCF (0).
  • Step S136 The AS sends an INVITE request to the CSCF (T), where the request carries the SDPMRS ringing.
  • Step S138 CSCF (T) sends the INVITE request to the UE-A.
  • Step S140 The UE-A will carry the A media information.
  • the 200 OK message is sent to the CSCF (T).
  • Step S142 The CSCF (T) forwards the 200 OK message carrying the media information to the AS.
  • Step S144 The AS sends an acknowledgement (ACK) message to the CSCF (T).
  • the CSCF (T) forwards the ACK message to the UE-A.
  • Step S148 The AS sends a PRACK message (SDPAS) to the CSCF (T) to the CSCF (T).
  • SDPAS PRACK message
  • Step SI 52 The UE-C sends a 200 OK message to the CSCF (T).
  • Step S154 The CSCF (T) forwards the 200 OK message to the AS.
  • Step SI 56 The UE-C sends a 200 OK message to the CSCF (T)
  • Step S158 The CSCF (T) forwards the 200 OK message to the AS.
  • Step S162 The CSCF (T) forwards the ACK message to the UE-C.
  • Step S166 The CSCF (T) forwards the REVITE request to the UE-A.
  • Step S168 1 - direction. 8. ? (1) Send 200 (3 ⁇ 4 message, where the message carries SDP A.
  • Step S170 CSCF (T) sends a 200 OK message carrying SDP A to the AS.
  • Step S172 The AS sends the CSDP carrying the SDP to the CSCF (T) The INVITE message of A.
  • Step S174 The CSCF (T) sends an INVITE message carrying the SDP A to the UE-C.
  • Step S176 The UE-C sends a 200 OK message carrying the SDP C to the CSCF (T).
  • the CSCF (T) sends a 200 OK message carrying the SDP C to the AS.
  • Step SI 82: CSCF (T) will carry the SDP C
  • the ACK message is sent to the UE-A.
  • Message SI 92: CSCF (0) sends a Notify message to UE-B.
  • Step SI 94 UE-B sends a 200 OK message to CSCF (O)
  • a blind forwarding service can be implemented by sending a Refer message, but for a terminal that does not support the Refer capability, SUMMARY OF THE INVENTION
  • the main object of the present invention is to provide a blind transfer implementation method and apparatus for solving at least the above problem for a terminal that does not support the Refer capability, and cannot achieve blind turn.
  • a A blind transfer implementation method includes: maintaining a call with a communication peer; sending an INVITE request for indicating a blind transfer to the application server AS.
  • sending the INVITE request for indicating a blind transfer to the AS comprises: sending an INVITE request to the AS through the link of the call; or sending an INVITE request through the re-established link to the AS.
  • the INVITE request carries: an identifier indicating the blind turn and an identifier of the blindly turned user equipment; or, an identifier indicating the blind turn, an identifier of the blindly turned user equipment, and media information of the user equipment.
  • a method for implementing a blind transfer comprising the steps of: receiving an INVITE request from a user equipment for indicating a blind turn; sending an INVITE request indicating a blind turn to a blindly rotated user equipment Call request.
  • the method further includes: releasing a call between the user equipment and the communication peer of the user equipment.
  • the INVITE request carries: an identifier indicating the blind turn and an identifier of the blindly turned user equipment; or, an identifier indicating the blind turn, an identifier of the blindly turned user equipment, and media information of the user equipment.
  • a blind transfer implementation apparatus for use in a user equipment, comprising: a hold module configured to maintain a call with a communication peer; and a first sending module configured to send a setting to an application server AS An INVITE request to indicate a blind turn.
  • the first sending module includes: a second sending module, configured to send to the AS by using a link of the call
  • a blind transfer implementation apparatus which is applied to an AS, and includes: a first receiving module configured to receive an INVITE request from a user equipment for indicating a blind turn; and a fourth sending module , configured to send a call request to the blindly-turned user equipment according to the INVITE request indicating blind transfer.
  • the device further includes: a release module, configured to release a call between the user equipment and the communication peer of the user equipment.
  • the INVITE request for the blind end is sent to the AS, and then the INVITE request for indicating the blind transfer is sent to the AS, and only some of the terminals in the related art can support the Refer capability, and the Refer message can be sent to implement the blind transfer service.
  • a terminal that does not support the Referential capability cannot implement the blind transfer problem, and thus implements the blind transfer service without supporting the Refer terminal, and achieves the effect of expanding the terminal type for implementing the blind transfer service.
  • FIG. 1 is a flowchart of a method for implementing a blind turn according to the related art
  • FIG. 2 is a first flowchart of a method for implementing a blind turn according to an embodiment of the present invention
  • FIG. 3 is a blind turn according to an embodiment of the present invention.
  • FIG. 4 is a first structural block diagram of a blind turn implementing apparatus according to an embodiment of the present invention
  • FIG. 5 is a first block diagram of a preferred first embodiment of a blind turn implementing apparatus according to an embodiment of the present invention
  • FIG. 7 is a block diagram of a preferred second structure of a blind turn implementation device according to an embodiment of the present invention
  • FIG. 8 is a blind transfer implementation according to an embodiment of the present invention.
  • FIG. 9 is a flow chart 1 of a method for implementing a blind transfer service according to a preferred embodiment of the present invention
  • FIG. 10 is a flow chart 2 of a method for implementing a blind transfer service according to a preferred embodiment of the present invention.
  • FIG. 2 is a first flowchart of a method for implementing a blind transfer according to an embodiment of the present invention, including the following steps: Step S202: Maintain a call with a communication peer; Step S204: To AS Send an INVITE request to indicate a blind turn.
  • the call with the communication peer is first maintained, and then the INVITE request for indicating the blind transfer is sent to the AS to perform the blind transfer, and the INVITE request supported by all the terminals is used to overcome the related art.
  • the Refer request to perform a blind transfer resulting in a terminal that does not support the Refer capability cannot be implemented.
  • the problem of blind transfer so that the terminal that does not support Refer can be blindly transferred, and the effect of expanding the terminal type of the blind transfer service is realized.
  • the INVITE request can be sent to the AS through the link of the call. In this manner, the INVITE request is still transmitted through the link that holds the call. In this manner, the link needs to keep the call on the one hand.
  • the request is sent to the AS, and the link load is relatively heavy.
  • the INVITE request can be sent through the re-established link to the AS, where the newly established link to the AS is sent. Request, reducing the load on the link.
  • the information carried by the INVITE request includes the following two methods: Method 1: indicating the identity of the blind turn and the identity of the blindly turned user equipment; or, mode 2: indicating the identity of the blind turn, the identity of the blindly turned user equipment, and Media information of the user device.
  • Mode 1 carries the identity of the blind-turning identity and the blind-turning user equipment, and can implement the blind-switching service.
  • FIG. 3 is a second flowchart of a method for implementing a blind transfer according to an embodiment of the present invention. The method includes the following steps: Step S302: Receive a blind transfer from a user equipment. INVITE request; Step S304: Send a call request to the blindly-turned user equipment according to the INVITE request indicating blind transfer.
  • the Refer request is used to perform the blind transfer.
  • the terminal that does not support the Refer capability cannot implement the blind transfer. Therefore, the terminal that does not support the Refer can be blindly transferred, and the effect of expanding the terminal type of the blind transfer service is realized.
  • the call between the user equipment and the communication peer of the user equipment may be continued, which implements the waiting after the blind turn.
  • the information carried by the INVITE request includes the following two methods: Method 1: indicating the identity of the blind turn and the identity of the blindly turned user equipment; or, mode 2: indicating the identity of the blind turn, the identity of the blindly turned user equipment, and Media information of the user device.
  • Mode 1 carries the identity of the blind-turning identity and the blind-turning user equipment, and can implement the blind-switching service.
  • the mode 2 comparison and the mode 1 also carry the media information, so that the blind tone can be performed, and the similar required media information can be performed.
  • Business It should be noted that the above preferred embodiments may be combined with each other to form different embodiments.
  • a blind turn implementation device is also provided.
  • the term "module" may implement a combination of software and/or hardware for a predetermined function.
  • the embodiment of the invention provides a blind turn implementation device, which is applied to a user equipment, and the device can be used to implement the blind conversion implementation method.
  • 4 is a first structural block diagram of a blind turn implementation apparatus according to an embodiment of the present invention, including: a hold module 42, a first transmit module 44, and the above structure is described in detail below.
  • the hold module 42 is configured to maintain a call with the communication peer;
  • the first sending module 44 is coupled to the hold module 42 and configured to send an INVITE request for indicating a blind turn to the application server AS.
  • a preferred blind turn implementation device is also provided.
  • FIG. 5 is a block diagram of a preferred first structure of the blind turn implementation device according to an embodiment of the present invention. As shown in FIG.
  • FIG. 5 is a second structural block diagram of a blind turn implementation device according to an embodiment of the present invention. As shown in Fig. 6, the device comprises: a first receiving module 62 and a fourth transmitting module 64. The above structure will be described in detail below.
  • the first receiving module 62 is configured to receive an INVITE request from the user equipment for indicating a blind turn; the fourth sending module 64 is connected to the first receiving module 62, and is configured to perform blind transfer according to the indication received by the first receiving module 62.
  • the INVITE request sends a call request to the blinded user equipment.
  • FIG. 7 is a block diagram of a preferred second structure of the blind turn implementation device according to the embodiment of the present invention. As shown in FIG. 7, the device further includes:
  • the release module 72 is described in detail below. The release module 72 is configured to release a call between the user equipment and the communication peer of the user equipment.
  • FIG. 8 is a structural block diagram of a system for implementing a blind transfer service according to an embodiment of the present invention. As shown in FIG. 8, the system includes: The terminal 82, the application server 84, and the MRS media server 86 will be described in detail below.
  • UE User Equipment
  • the user terminal 82 may include terminals of the following types: a C network or a G network mobile phone, a PSTN terminal, an IMS terminal, and the like.
  • Application Server (Application Server, AS for short) 84 Set to provide the underlying service capabilities, such as: call control, status reporting, bill generation, and so on.
  • Media Resource Server (MRS) 86 Set to provide voice media capabilities, generally Media Server (MS), such as playing a call hold tone to the held party during call hold.
  • the communication in the foregoing network element may use a protocol as exemplified in the following:
  • the AS negotiates with the MRS or the UE for the media of the call.
  • the AS and the UE use the SIP protocol to communicate with each other through the core network.
  • the AS and the MRS usually use the SIP protocol or the MGCP protocol, which is determined by the protocol type supported by the MRS.
  • FIG. 8 is only an outline diagram, which hides the topology of the IMS network or the NGN network.
  • the AS, the MRS, and the UE are accessed or anchored to the IMS network or the NGN network.
  • the second embodiment of the present invention provides a blind transfer implementation method. The embodiment combines the foregoing embodiments and preferred embodiments thereof.
  • FIG. 9 is a flowchart of a method for implementing a blind transfer service according to a preferred embodiment of the present invention.
  • the method includes: Step S902: User A is any user, User B is a service user, User B is in a call with User A, and User B can be a calling party or a called party.
  • Step S910 The AS calls the user C.
  • Step S912 User C rings, and the AS plays a ringback tone to User A.
  • Step S914 When the user C picks up the phone, the AS stops playing the ring back tone to the user A.
  • Step S916 The AS bridges the user C with the user A to implement the call between the user C and the user A.
  • Preferred Embodiment 2 This embodiment provides a method for implementing a blind transfer.
  • UE A is any user
  • UE B is a service user
  • a blind transfer service is signed
  • UE C is any user
  • FIG. 10 According to a second embodiment of the method for implementing the blind transfer service according to the preferred embodiment of the present invention, as shown in FIG. 10, the method includes: Step S1002: UE B sends an INVITE request to the AS, where the requested number is a blind transfer service code plus user C. Number, and carry the media information of UE B.
  • step S1004 the AS returns a 480 response to the UE B, and releases the UE B.
  • step S1006 UE B sends an ACK confirmation message to the AS to exit the session.
  • Step S1008 The AS sends a BYE request to the UE B, and releases the call between the UE B and the UE A.
  • step S1010 the UE B returns a 200 OK response of the BYE to the AS, and exits the session with the UE A.
  • step S1012 The AS sends an INVITE request to the UE C, and does not carry the media information.
  • step S1014 the UE C rings, returns a 180 response of the INVITE to the AS, and does not carry the media information.
  • Step S1016 After applying the media resource to the MRS, the AS sends a REINVITE request to the UE A to carry the media information of the MRS.
  • UE A returns a 200 OK response of REINVITE to the AS, carrying the media of UE A ⁇
  • Step S1020 The AS sends an ACK confirmation message to UE A.
  • UE A listens to the ring back tone.
  • Step S1022 UE C picks up the phone, returns a 200 OK response of the INVITE to the AS, and carries the media information of the UE C.
  • Step S1024, the AS sends a REINVITE request to the UE A, and carries the media information of the UE C obtained in step 311.
  • UE A returns a 200 OK response of REINVITE to the AS, carrying the media of UE A ⁇
  • Step S1028 the AS sends an ACK acknowledgement message to the UE C, and carries the media information of the UE A obtained in step 313.
  • Step S1030 the AS sends an ACK confirmation message to the UE A, and does not carry the media information.
  • UE C and UE A complete the media negotiation and enter the call state.
  • the terminal does not need to support the Refer message.
  • the service user only needs to dial a specific service code and a destination user number to release the service user.
  • the AS calls the destination user, and the destination user picks up the phone. Switch the call of the business user to the destination user.
  • the blind transfer service provided by the foregoing embodiment belongs to a back-to-back (B2B) call type service, and has broad application prospects.
  • the advantages of the service are as follows:
  • the terminal does not need to support the ability to send a Refer message, and supports all terminals on the live network (narrowband terminals need to be anchored to the IMS or NGN); not only can be implemented in the IMS network, but also in the NGN network.
  • the convergence of CS and PS networks has made the business have a very broad development and use space. It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across multiple computing devices.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)

Abstract

本发明公开了盲转实现方法及装置,该方法包括:保持与通信对端的通话;向AS发送用于指示盲转的INVITE请求。通过本发明,克服了相关技术中采用Refer请求来进行盲转,导致不支持Refer能力的终端不能实现盲转的问题,实现不支持Refer的终端进行盲转,实现了扩大实现盲转业务的终端类型的效果。

Description

盲转实现方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及盲转实现方法及装置。 背景技术 盲转, 属于通话后切换业务, 其含义是当任一用户 A与业务用户 B通话后, 用户
B做转接操作, 带上任一用户 C的号码信息, 用户 B退出, 用户 B所在的应用服务器 (Application Server, 简称为 AS) 呼叫用户 C, 用户 C振铃, 用户 A听回铃音, 用户 C摘机, 用户 A与用户 C通话。 相关技术中的盲转技术是通过 IP多媒体子系统 (IP Multimedia Subsystem, 简称 为 IMS) 网络以及终端的 Refer能力来实现的, 图 1是根据相关技术的盲转实现方法 的流程图, 需要呼叫转接操作方的终端支持发送 Refer消息, 而且仅能在 IMS网络中 实现, 如图 1所示, 该方法包括如下步骤: 步骤 S 102: UE-A与 UE-B通话, 保持与 A的通话链路。 步骤 S104: UE-B向呼叫会话控制功能实体 (0) (Call Session Control Function, 简称为 CSCF) Refer请求, 其中该请求携带有向 C盲转的信息。 牛少鹏 S106: CSCF将该 Refer请求转发给 AS。
牛少鹏 S108: AS向 CSCF ( 0) 发送消息, 该消息为 202 Accepted (接收)。 牛少鹏 S110: CSCF向 UE-B转发该 202 Accepted消息。 牛少鹏 S112: AS向 CSCF (T) 发送 INVITE请求。 牛少鹏 S114: 应用服务器向 CSCF (0) 发送 Notify (通知)。 牛少鹏 S116: CSCF (T) 向 UE-C发送 INVITE请求。 牛少鹏 S118: CSCF (0) 向 UE-B发送 Notify消息。 牛少鹏 S120: UE-C向 CSCF (T) 发起 180 ringing (铃音) 消息, 其中携带了 C的
:信息 SDPo 步骤 S122: UE-B向 CSCF (O) 发送消息, 该消息为 200 OK。 步骤 S124: CSCF (0) 将 200 OK消息转发给 AS。 步骤 S126: CSCF (T) 向 AS发送 180 ring消息, 该消息携带有用户 C的媒体信 息 SDP。 步骤 S128: UE-B向 CSCF (0) 发送 Bye (结束) 消息。 步骤 S130: CSCF (0) 向 AS发送 Bye消息。 步骤 S132: AS向 CSCF (0) 发送 200 OK消息。 步骤 S134: CSCF (0) 向 UE-B发送 200 OK消息。 步骤 S136: AS向 CSCF (T)发送 INVITE请求,该请求中携带 SDPMRS ringing„ 步骤 S138: CSCF (T) 将该 INVITE请求发送给 UE-A。 步骤 S140: UE-A将携带有 A媒体信息的 200 OK消息发送给 CSCF (T)。 步骤 S142: CSCF (T) 将携带有 Α媒体信息的 200 OK消息转发给 AS。 步骤 S144: AS向 CSCF (T) 发送确认 (ACK) 消息。 步骤 S146: CSCF (T) 向 UE-A转发 ACK消息。 步骤 S 148: AS向 CSCF (T) 发送 PRACK消息 (SDPAS) 给 CSCF (T)。 步骤 S150: CSCF (T) 将 PRACK消息 (SDPAS) 转发给 UE-C。 步骤 SI 52: UE-C向 CSCF (T) 发送 200 OK消息。 步骤 S154: CSCF (T) 向 AS转发 200 OK消息。 步骤 SI 56: UE-C向 CSCF (T) 发送 200 OK消息。 步骤 S158: CSCF (T) 向 AS转发 200 OK消息。 步骤 S160: AS向 CSCF (T) 发送 ACK消息。 步骤 S162: CSCF (T) 将该 ACK消息转发给 UE-C。 步骤 S164: AS向 CSCF (T) 发送 REVITE请求。 步骤 S166: CSCF (T) 将该 REVITE请求转发给 UE-A。 步骤 S168: 1 - 向。8。?(1 发送200 (¾消息,其中,该消息中携带有 SDP A。 步骤 S170: CSCF (T) 向 AS发送携带有 SDP A的 200 OK消息。 步骤 S172: AS向 CSCF (T) 发送携带有 SDP A的 INVITE消息。 步骤 S174: CSCF (T) 向 UE-C发送携带有 SDP A的 INVITE消息。 步骤 S176: UE-C将携带有 SDP C的 200 OK消息发送给 CSCF (T)。 步骤 S178: CSCF (T) 将携带有 SDP C的 200 OK消息发送给 AS。 步骤 S180: AS将携带有 SDP C的 ACK消息发送给 CSCF (T)。 步骤 SI 82: CSCF (T) 将携带有 SDP C的 ACK消息发送给 UE-A。 步骤 S184: AS向 CSCF (T) 发送 ACK消息。 步骤 S186: CSCF (T) 向 UE-C发送 ACK消息。 步骤 SI 90: AS向 CSCF ( O) 发送 Notify (通知) 消息。 步骤 SI 92: CSCF (O) 向 UE-B发送 Notify消息。 步骤 SI 94: UE-B向 CSCF (O) 发送 200 OK消息。 步骤 S196: CSCF (O) 向 AS发送 200 OK消息。 相关技术中, 只有部分终端才能支持 Refer能力, 可以通过发送 Refer消息实现盲 转业务, 但是对于不支持 Refer能力的终端, 则不能实现盲转。 发明内容 本发明的主要目的在于提供盲转实现方法及装置, 以至少解决上述对于不支持 Refer能力的终端, 不能实现盲转的问题。 根据本发明的一个方面, 提供了一种盲转实现方法, 包括: 保持与通信对端的通 话; 向应用服务器 AS发送用于指示盲转的 INVITE请求。 优选地, 向 AS发送用于指示盲转的 INVITE请求包括: 通过通话的链路向 AS发 送 INVITE请求; 或者, 通过重新建立的到 AS的链路发送 INVITE请求。 优选地, INVITE请求携带有: 指示盲转的标识和盲转的用户设备的标识; 或者, 指示盲转的标识、 盲转的用户设备的标识和用户设备的媒体信息。 根据本发明的另一方面, 还提供了一种盲转实现方法, 包括如下步骤: 接收来自 用户设备的用于指示盲转的 INVITE请求; 根据指示盲转的 INVITE请求向盲转的用 户设备发送呼叫请求。 优选地, 在接收来自用户设备的用于指示盲转的 INVITE请求之后, 还包括: 释 放用户设备与用户设备的通信对端之间的通话。 优选地, INVITE请求携带有: 指示盲转的标识和盲转的用户设备的标识; 或者, 指示盲转的标识、 盲转的用户设备的标识和用户设备的媒体信息。 根据本发明的再一方面, 提供了一种盲转实现装置, 应用于用户设备中, 包括: 保持模块, 设置为保持与通信对端的通话; 第一发送模块, 设置为向应用服务器 AS 发送设置为指示盲转的 INVITE请求。 优选地, 第一发送模块包括: 第二发送模块, 设置为通过通话的链路向 AS发送
INVITE请求;第三发送模块,设置为通过重新建立的到 AS的链路发送 INVITE请求。 根据本发明的又一方面, 还提供了一种盲转实现装置, 应用于 AS 中, 包括: 第 一接收模块, 设置为接收来自用户设备的用于指示盲转的 INVITE请求; 第四发送模 块, 设置为根据指示盲转的 INVITE请求向盲转的用户设备发送呼叫请求。 优选地, 上述装置还包括: 释放模块, 设置为释放用户设备与用户设备的通信对 端之间的通话。 通过本发明,采用保持与通信对端的通话,然后向 AS发送用于指示盲转的 INVITE 请求, 解决了相关技术中只有部分终端才能支持 Refer能力, 可以通过发送 Refer消息 实现盲转业务, 但是对于不支持 Refer能力的终端, 则不能实现盲转的问题, 进而实 现了不支持 Refer终端进行盲转业务, 达到了扩大实现盲转业务的终端类型的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据相关技术的盲转实现方法的流程图; 图 2是根据本发明实施例的盲转实现方法的第一流程图; 图 3是根据本发明实施例的盲转实现方法的第二流程图; 图 4是根据本发明实施例的盲转实现装置的第一结构框图; 图 5是根据本发明实施例的盲转实现装置的优选的第一结构框图; 图 6是根据本发明实施例的盲转实现装置的第二结构框图; 图 7是根据本发明实施例的盲转实现装置的优选的第二结构框图; 图 8是根据本发明实施例的实现盲转业务的系统的结构框图; 图 9根据本发明优选实施例的盲转业务实现方法的流程图一; 以及 图 10根据本发明优选实施例的盲转业务实现方法的流程图二。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 本实施例提供了一种盲转实现方法, 图 2是根据本发明实施例的盲转实现方法的 第一流程图, 包括如下步骤: 步骤 S202: 保持与通信对端的通话; 步骤 S204: 向 AS发送用于指示盲转的 INVITE请求。 通过上述步骤, 在进行盲转时, 首先保持与通信对端的通话, 然后通过向 AS发 送用于指示盲转的 INVITE请求来进行盲转, 采用所有终端都支持的 INVITE请求, 克服了相关技术中采用 Refer请求来进行盲转,导致不支持 Refer能力的终端不能实现 盲转的问题, 所以可以实现不支持 Refer的终端进行盲转, 实现了扩大实现盲转业务 的终端类型的效果。 在一个比较优的实施方式中, 可以通过通话的链路向 AS发送 INVITE请求, 这 种方式仍然通过保持通话的链路进行 INVITE请求的传输, 该方式中该链路一方面需 要保持通话, 另一方面还要向 AS发送请求, 链路负荷比较重, 在另外一个优选的实 施方式中, 可以通过重新建立的到 AS的链路发送 INVITE请求, 该方式采用新建立 的到 AS的链路发送请求, 降低了链路的负荷。 优选地, INVITE请求携带的信息包括以下两种方式: 方式一: 指示盲转的标识和 盲转的用户设备的标识; 或者, 方式二: 指示盲转的标识、 盲转的用户设备的标识和 用户设备的媒体信息。 方式一携带了盲转标识和盲转的用户设备的标识, 可以实现盲转业务, 方式二相 比较与方式一还携带了媒体信息, 使得盲转过程中, 可以进行彩铃等类似的需要媒体 信息的业务。 本实施例提供了一种盲转实现方法, 图 3是根据本发明实施例的盲转实现方法的 第二流程图, 该方法包括如下步骤: 步骤 S302: 接收来自用户设备的用于指示盲转的 INVITE请求; 步骤 S304: 根据指示盲转的 INVITE请求向盲转的用户设备发送呼叫请求。 通过上述步骤, 在进行盲转时, 接收用于指示盲转的 INVITE请求, 然后根据指 示盲转的 INVITE 请求向盲转的用户设备发送呼叫请求, 采用所有终端都支持的 INVITE请求, 克服了相关技术中采用 Refer请求来进行盲转, 导致不支持 Refer能力 的终端不能实现盲转的问题, 所以可以实现不支持 Refer的终端进行盲转, 实现了扩 大实现盲转业务的终端类型的效果。 在一个优选实施方式中, 在接收来自用户设备的用于指示盲转的 INVITE请求之 后, 可以继续保持用户设备与用户设备的通信对端之间的通话, 该方式实现了盲转后 的等待, 并适用于以下情况, 在盲转后, 还需要将电话再次转接回来, 就不需要再次 建立呼叫链路, 另一个方式为: 释放用户设备与用户设备的通信对端之间的通话, 该 方式在盲转后, 直接释放用户设备与用户设备的通信对端之间的通话, 提高了链路的 利用率。 优选地, INVITE请求携带的信息包括以下两种方式: 方式一: 指示盲转的标识和 盲转的用户设备的标识; 或者, 方式二: 指示盲转的标识、 盲转的用户设备的标识和 用户设备的媒体信息。 方式一携带了盲转标识和盲转的用户设备的标识, 可以实现盲转业务, 方式二相 比较与方式一还携带了媒体信息, 使得盲转过程中, 可以进行彩铃等类似的需要媒体 信息的业务。 需要说明的是, 上述优选实施方式可以相互组合形成不同的实施例。 在本实施例中, 还提供了一种盲转实现装置, 如以下实施例所使用的, 术语 "模 块"可以实现预定功能的软件和 /或硬件的组合。 尽管以下实施例所描述的系统和方法 较佳地以软件来实现,但是硬件, 或者软件和硬件的组合的实现也是可能并被构想的。 本发明实施例提供了一种盲转实现装置, 应用于用户设备中, 该装置可以用于实 现上述盲转实现方法。 图 4是根据本发明实施例的盲转实现装置的第一结构框图, 包 括: 保持模块 42, 第一发送模块 44, 下面对上述结构进行详细说明。 保持模块 42, 设置为保持与通信对端的通话; 第一发送模块 44, 连接至保持模块 42, 设置为向应用服务器 AS发送用于指示盲转的 INVITE请求。 在本实施例中, 还提供了一种优选的盲转实现装置, 图 5是根据本发明实施例的 盲转实现装置的优选的第一结构框图, 如图 5所示, 第一发送模块 44包括: 第二发送 模块 442或第三发送模块 444, 下面对上述结构进行详细说明。 第二发送模块 442, 设置为通过通话的链路向 AS发送 INVITE请求; 第三发送模 块 444, 设置为通过重新建立的到 AS的链路发送 INVITE请求。 本实施例提供了一种盲转实现装置, 应用于 AS 中, 该装置可以用于实现上述盲 转实现方法, 图 6是根据本发明实施例的盲转实现装置的第二结构框图, 如图 6所示, 该装置包括: 第一接收模块 62, 第四发送模块 64, 下面对上述结构进行详细说明。 第一接收模块 62, 设置为接收来自用户设备的用于指示盲转的 INVITE请求; 第 四发送模块 64, 连接至第一接收模块 62, 设置为根据第一接收模块 62接收到的指示 盲转的 INVITE请求向盲转的用户设备发送呼叫请求。 在本实施例中, 还提供了一种优选的盲转实现装置, 图 7是根据本发明实施例的 盲转实现装置的优选的第二结构框图, 如图 7所示, 该装置还包括: 释放模块 72, 下 面对上述结构进行详细描述: 释放模块 72, 设置为释放用户设备与用户设备的通信对端之间的通话。 需要说明的是, 在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但是在某些情况下, 可 以以不同于此处的顺序执行所示出或描述的步骤。 下面将结合优选实施例进行说明。 优选实施例一 本实施例提供了一种实现盲转的系统的结构框图, 图 8是根据本发明实施例的实 现盲转业务的系统的结构框图, 如图 8所示, 该系统包括: 用户终端 82, 应用服务器 84和 MRS媒体服务器 86, 下面对上述结构进行详细说明。 用户终端 (User Equipment, 简称为 UE) 82: 完成发起呼叫、 接听呼叫以及做其 他呼叫操作的装置,用户终端 82可以包括类似以下类型终端: C网或 G网手机、 PSTN 终端、 IMS终端等。 应用服务器 (Application Server, 简称为 AS) 84: 设置为提供底层业务能力, 例 如: 呼叫控制, 状态上报, 话单生成等功能。 媒体服务器 (Media Resource Server, 简称为 MRS) 86: 设置为提供语音媒体能 力, 一般为媒体服务器 (Media Server, 简称为 MS), 如在呼叫保持过程中给被保持 方用户播放呼叫保持提示音等。 优选地, 上述网元中进行通信可以使用如下示例的协议:
AS同 MRS或 UE之间为呼叫通话的媒体协商, AS与 UE通过核心网使用 SIP协 议互通, AS同 MRS之间通常使用 SIP协议或 MGCP协议,具体决定于 MRS支持的 协议类型。
UE同 MRS之间为媒体流的传送, UE与 MRS具体媒体包的编解码格式, 收发端 口, 带宽传输速率等, 根据呼叫时, 终端同 MRS之间的媒体协商进行。 需要说明的是: 图 8只是一个概要的图示, 隐藏了 IMS网络或 NGN网络的拓扑 结构, 实际实现中 AS, MRS及 UE是接入或锚定到 IMS网络或 NGN网络中的。 优选实施例二 本实施例提供了一种盲转实现方法, 本实施例结合了上述实施例及其中的优选实 施方式, 图 9根据本发明优选实施例的盲转业务实现方法的流程图, 该方法包括: 步骤 S902: 用户 A是任一用户, 用户 B是业务用户, 用户 B与用户 A处于通话 中, 用户 B可以是主叫也可以是被叫。 步骤 S904: 用户 B保持用户 A, 用户 A听呼叫保持提示音。 步骤 S906: 用户 B拨打盲转业务码加用户 C的号码, 其中用户 C是任一用户。 步骤 S908: AS收到用户 B的呼叫请求, 释放用户8。 步骤 S910: AS呼叫用户 C。 步骤 S912: 用户 C振铃, AS给用户 A播放回铃音。 步骤 S914: 用户 C摘机, AS停止给用户 A播放回铃音。 步骤 S916: AS将用户 C与用户 A桥接, 实现用户 C与用户 A的通话。 优选实施例二 本实施例提供了一种盲转实现方法, 在本实施例中, UE A是任一用户, UE B是 业务用户, 签约了盲转业务, UE C是任一用户, 图 10根据本发明优选实施例的盲转 业务实现方法的流程图二, 如图 10所示, 该方法包括: 步骤 S1002, UE B向 AS发送 INVITE请求, 请求的号码为盲转业务码加用户 C 的号码, 并携带 UE B的媒体信息。 步骤 S1004, AS向 UE B返回 480响应, 释放 UE B。 步骤 S1006, UE B向 AS发送 ACK确认信息, 退出会话。 步骤 S1008, AS向 UE B发送 BYE请求, 释放 UE B与 UE A的通话。 步骤 S1010, UE B向 AS返回 BYE的 200 OK响应, 退出与 UE A的会话。 步骤 S1012, AS向 UE C发送 INVITE请求, 不携带媒体信息。 步骤 S1014, UE C振铃, 向 AS返回 INVITE的 180响应, 不携带媒体信息。 步骤 S1016, AS向 MRS申请媒体资源后, 向 UE A发送 REINVITE请求, 携带 MRS的媒体信息。
'、 _- 步骤 S1018, UE A向 AS返回 REINVITE的 200 OK响应, 携带 UE A的媒体ϊ
步骤 S1020, AS向 UE A发送 ACK确认信息。 UE A听回铃音。 步骤 S1022, UE C摘机, 向 AS返回 INVITE的 200 OK响应, 携带 UE C的媒体 信息。 步骤 S1024, AS向 UE A发送 REINVITE请求, 携带从步骤 311中得到的 UE C 的媒体信息。
'、 _- 步骤 S1026, UE A向 AS返回 REINVITE的 200 OK响应, 携带 UE A的媒体ϊ
步骤 S1028, AS向 UE C发送 ACK确认信息, 携带从步骤 313中得到的 UE A的 媒体信息。 步骤 S1030, AS向 UE A发送 ACK确认信息, 不携带媒体信息。 此时 UE C与 UE A完成了媒体协商, 进入通话状态。 通过本实施例, 实现盲转业务时, 不需要终端支持 Refer消息, 只需要业务用户 拨打特定的业务码加目的用户号码, 将业务用户释放, AS呼叫目的用户, 目的用户摘 机后, 就可以将业务用户的通话切换到目的用户。 上述实施例提供的盲转业务属于一种背靠背式 (B2B ) 呼叫类服务, 有着广阔的 应用前景。 该业务的优点有: 不需要终端支持发送 Refer消息的能力, 支持现网所有 终端 (窄带终端需要锚定到 IMS或 NGN);不仅可以在 IMS网络中实现,还可以在 NGN 网络中实现。 并且随着 3G网络的崛起, CS与 PS网络的融合, 使得该业务有非常广 阔的发展和使用空间。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而可以将 它们存储在存储装置中由计算装置来执行,或者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限 制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种盲转实现方法, 包括如下步骤:
保持与通信对端的通话;
向应用服务器 AS发送用于指示盲转的 INVITE请求。
2. 根据权利要求 1所述的方法, 其中, 向 AS发送用于指示盲转的 INVITE请求 包括:
通过所述通话的链路向所述 AS发送所述 INVITE请求; 或者, 通过重新建立的到所述 AS的链路发送所述 INVITE请求。
3. 根据权利要求 1或 2所述的方法, 其中, 所述 INVITE请求携带有: 指示盲转的标识和盲转的用户设备的标识; 或者,
所述指示盲转的标识、 所述盲转的用户设备的标识和所述用户设备的媒体 信息。
4. 一种盲转实现方法, 包括如下步骤:
接收来自用户设备的用于指示盲转的 INVITE请求;
根据所述指示盲转的 INVITE请求向盲转的用户设备发送呼叫请求。
5. 根据权利要求 4 所述的方法, 其中, 在接收来自用户设备的用于指示盲转的 INVITE请求之后, 还包括: 释放所述用户设备与所述用户设备的通信对端之间的通话。
6. 根据权利要求 4或 5所述的方法, 其中, 所述 INVITE请求携带有: 指示盲转的标识和盲转的用户设备的标识; 或者,
所述指示盲转的标识、 所述盲转的用户设备的标识和所述用户设备的媒体 信息。
7. 一种盲转实现装置, 应用于用户设备中, 包括:
保持模块, 设置为保持与通信对端的通话; 第一发送模块, 设置为向应用服务器 AS发送用于指示盲转的 INVITE请 求。 根据权利要求 7所述的装置, 其中, 所述第一发送模块包括:
第二发送模块, 设置为通过所述通话的链路向所述 AS 发送所述 INVITE 请求;
第三发送模块,设置为通过重新建立的到所述 AS的链路发送所述 INVITE 请求。 一种盲转实现装置, 应用于应用服务器 AS中, 包括:
第一接收模块,设置为接收来自用户设备的用于指示盲转的 INVITE请求; 第四发送模块, 设置为根据所述指示盲转的 INVITE请求向盲转的用户设 备发送呼叫请求。 根据权利要求 9所述的装置, 其中, 还包括: 释放模块, 设置为释放所述用户设备与所述用户设备的通信对端之间的通 话。
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